If you are thinking the one where the blond lady is standing in front of her suite than you just have to find her key. And where is the key?When you get to the reception (DON'T go inside) there are...
Sorry, you can only obtain your own house in Pokemon Platinum. But you can still have a secret base in pearlSorry, you can only obtain your own house in Pokemon Platinum. But you can still have a...
If you are talking about the one in Canalave City, which is the only one I can think of, you have to go to a special event and get a key. Inside is where you can find darkrai.